const install = function (Vue) {
    const Bus = new Vue({
        methods:{
            emit (event,...args) {
                this.$emit(event,...args)
            },
            on (event,callback) {
                this.$on(event,callback)
            },
            off (event,callback) {
                this.$off(event,callback)
            }
        }
    });
    Vue.prototype.$bus = Bus;
};
export default install;
